Mark W.B. Wilson
@markwbwilson.bsky.social
Assoc prof of physical & materials chemistry at the UofT, using spectroscopy to study excitonic (nano)materials. Enthusiast, quite generally. (he/him)
Pinned
Direct Synthesis of Ultrasmall PbS Nanocrystals Passivated with a Metal-Halide-Perovskite-like Monolayer
Inorganic shelling is a key strategy to address unwanted, surface-mediated nonradiative pathways in semiconductor nanocrystals. Improved passivation particularly advances the use of the smallest nanocrystals because complex photophysics arise as nanomaterials approach the molecular limit. However, shelling strategies developed for larger/more-robust nanocrystals are not always applicable in this size regime. Herein, we introduce the direct synthesis of ultrasmall (ø < 2 nm) PbS nanocrystals shelled with a range of metal-halide-perovskite-like monolayers by employing the appropriate two-dimensional perovskite as a precursor at the point of nanocrystal growth. These passivated nanocrystals possess improved photoluminescence quantum yields, reduced dynamic spectral red-shifting after photoexcitation, and longer, more-monoexponential photoluminescence dynamics─consistent with a reduction in defect-mediated exciton–phonon coupling. We then apply these shelled, ultrasmall PbS nanocrystals as sensitizers in a triplet-fusion upconversion architecture and observe 2-fold improved triplet yields. This demonstration emphasizes the photophysical benefits realized via our 2D perovskite shelling strategy, which can be applied to other nanocrystals─especially to small particles that are similarly vulnerable to existing strategies for post-synthetic modifications.
pubs.acs.org
This is our story about learning to swap the surface of fragile, <2nm, 'Hines-type' PbS quantum dots, so that it matches the intrinsic ~half-layer perovskite on (larger) PbS QDs made from Pb-halides (h/t Cademartiri/Ozin, Weidman/Tisdale) pubs.acs.org/doi/full/10....
#chemsky #chemistry 🧪
#chemsky #chemistry 🧪
Reposted by Mark W.B. Wilson
Canadian researchers should be aware the there is a motion before the Parliamentary Standing Committee on Science and Research to force Tricouncils to hand over disaggregated peer review data on all applications:
Applicant names, profiles, demographics
Reviewers names, profiles, comments, and scores
Applicant names, profiles, demographics
Reviewers names, profiles, comments, and scores
October 30, 2025 at 8:33 PM
Canadian researchers should be aware the there is a motion before the Parliamentary Standing Committee on Science and Research to force Tricouncils to hand over disaggregated peer review data on all applications:
Applicant names, profiles, demographics
Reviewers names, profiles, comments, and scores
Applicant names, profiles, demographics
Reviewers names, profiles, comments, and scores
Reposted by Mark W.B. Wilson
Visiting Scholar: Professor Youhei Takeda of Osaka University will discuss “Triplet-Harvesting Organic Emitters Based on a Dibenzo [a,j] phenazine Core,” on Tuesday November 4, 2025, at 11:00 AM. Learn more at uoft.me/ChemSeminars
October 29, 2025 at 1:27 PM
Visiting Scholar: Professor Youhei Takeda of Osaka University will discuss “Triplet-Harvesting Organic Emitters Based on a Dibenzo [a,j] phenazine Core,” on Tuesday November 4, 2025, at 11:00 AM. Learn more at uoft.me/ChemSeminars
Reposted by Mark W.B. Wilson
I find there's a huge mismatch between the standard advice that people give about scientific conference talks, and how people actually give talks.
So I picked out the most important pieces of advice that are most often ignored. 🧪
So I picked out the most important pieces of advice that are most often ignored. 🧪
The best scientific talk advice that gets ignored
Here are some prescriptions for a case of UCPS (Unengaging Conference Presentation Syndrome).
scienceforeveryone.science
October 28, 2025 at 9:24 PM
I find there's a huge mismatch between the standard advice that people give about scientific conference talks, and how people actually give talks.
So I picked out the most important pieces of advice that are most often ignored. 🧪
So I picked out the most important pieces of advice that are most often ignored. 🧪
Reposted by Mark W.B. Wilson
The E. W. R. Steacie Award is presented to a scientist who has made a distinguished contribution to chemistry while working in Canada. Congratulations to Dr. Eugenia Kumacheva of the University of Toronto on being the recipient of this award. buff.ly/hIJg5dx
October 24, 2025 at 8:23 PM
The E. W. R. Steacie Award is presented to a scientist who has made a distinguished contribution to chemistry while working in Canada. Congratulations to Dr. Eugenia Kumacheva of the University of Toronto on being the recipient of this award. buff.ly/hIJg5dx
Reposted by Mark W.B. Wilson
Our department (UW-Madison Electrical and Computer Engineering) has two openings in semiconductors and quantum technologies
First, an open-rank (asst/assoc/full) search in quantum engineering, broadly defined, especially in experimental areas that take advantage of our nanofab resources
First, an open-rank (asst/assoc/full) search in quantum engineering, broadly defined, especially in experimental areas that take advantage of our nanofab resources
Assistant/Associate/Full Professor in Electrical and Computer Engineering (Quantum Engineering) - Madison, Wisconsin, United States
Current Employees: If you are currently employed at any of the Universities of Wisconsin, log in to Workday to apply through the internal application process.Job Category:FacultyEmployment Type:Regula...
jobs.wisc.edu
October 17, 2025 at 8:39 PM
Our department (UW-Madison Electrical and Computer Engineering) has two openings in semiconductors and quantum technologies
First, an open-rank (asst/assoc/full) search in quantum engineering, broadly defined, especially in experimental areas that take advantage of our nanofab resources
First, an open-rank (asst/assoc/full) search in quantum engineering, broadly defined, especially in experimental areas that take advantage of our nanofab resources
Reposted by Mark W.B. Wilson
Reposted by Mark W.B. Wilson
Université de Montréal: chimie inorganique https://chempostingscanada.blogspot.com/2025/10/universite-de-montreal-chimie.html
October 8, 2025 at 4:00 PM
Université de Montréal: chimie inorganique https://chempostingscanada.blogspot.com/2025/10/universite-de-montreal-chimie.html
Reposted by Mark W.B. Wilson
ACS Spring 2026 is just around the corner, and Qilei, Miguel, and I have the pleasure of organizing a joint symposium between PHYS, INOR, and ORGN on Mechanisms of Photoredox Catalysis. The abstract submission deadline is Sept. 29th, and we hope to see y'all there!
September 16, 2025 at 1:23 PM
ACS Spring 2026 is just around the corner, and Qilei, Miguel, and I have the pleasure of organizing a joint symposium between PHYS, INOR, and ORGN on Mechanisms of Photoredox Catalysis. The abstract submission deadline is Sept. 29th, and we hope to see y'all there!
Reposted by Mark W.B. Wilson
Check this out and come join us!
👀
The 2026 Gordon Research Conference on Unconventional Semiconductors is accepting applications. Limited to 200 spots, so please apply early!
When: July 26-31, 2026.
Where: University of Southern Maine.
👀
The 2026 Gordon Research Conference on Unconventional Semiconductors is accepting applications. Limited to 200 spots, so please apply early!
When: July 26-31, 2026.
Where: University of Southern Maine.
September 15, 2025 at 12:31 AM
Check this out and come join us!
👀
The 2026 Gordon Research Conference on Unconventional Semiconductors is accepting applications. Limited to 200 spots, so please apply early!
When: July 26-31, 2026.
Where: University of Southern Maine.
👀
The 2026 Gordon Research Conference on Unconventional Semiconductors is accepting applications. Limited to 200 spots, so please apply early!
When: July 26-31, 2026.
Where: University of Southern Maine.
Reposted by Mark W.B. Wilson
Competition closes September 10th! Join the Department of Chemistry at UofT!
September 8, 2025 at 1:49 PM
Competition closes September 10th! Join the Department of Chemistry at UofT!
Reposted by Mark W.B. Wilson
This monumental effort, undertaken by many outstanding co-authors, including several invited speakers from the Nanax 2023 conference, which we co-organized, is now online.
Special kudos to Maria Ibáñez and her team.
pubs.acs.org/doi/10.1021/...
Special kudos to Maria Ibáñez and her team.
pubs.acs.org/doi/10.1021/...
Prospects of Nanoscience with Nanocrystals: 2025 Edition
Nanocrystals (NCs) of various compositions have made important contributions to science and technology, with their impact recognized by the 2023 Nobel Prize in Chemistry for the discovery and synthesis of semiconductor quantum dots (QDs). Over four decades of research into NCs has led to numerous advancements in diverse fields, such as optoelectronics, catalysis, energy, medicine, and recently, quantum information and computing. The last 10 years since the predecessor perspective “Prospect of Nanoscience with Nanocrystals” was published in ACS Nano have seen NC research continuously evolve, yielding critical advances in fundamental understanding and practical applications. Mechanistic insights into NC formation have translated into precision control over NC size, shape, and composition. Emerging synthesis techniques have broadened the landscape of compounds obtainable in colloidal NC form. Sophistication in surface chemistry, jointly bolstered by theoretical models and experimental findings, has facilitated refined control over NC properties and represents a trusted gateway to enhanced NC stability and processability. The assembly of NCs into superlattices, along with two-dimensional (2D) photolithography and three-dimensional (3D) printing, has expanded their utility in creating materials with tailored properties. Applications of NCs are also flourishing, consolidating progress in fields targeted early on, such as optoelectronics and catalysis, and extending into areas ranging from quantum technology to phase-change memories. In this perspective, we review the extensive progress in research on NCs over the past decade and highlight key areas where future research may bring further breakthroughs.
pubs.acs.org
September 4, 2025 at 9:37 AM
This monumental effort, undertaken by many outstanding co-authors, including several invited speakers from the Nanax 2023 conference, which we co-organized, is now online.
Special kudos to Maria Ibáñez and her team.
pubs.acs.org/doi/10.1021/...
Special kudos to Maria Ibáñez and her team.
pubs.acs.org/doi/10.1021/...
Reposted by Mark W.B. Wilson
The Department of Chemistry in the Faculty of Arts & Science at the University of Toronto is inviting applications for two full-time tenure stream positions in Experimental Physical Chemistry. Competition closes September 10, 2025 - visit us to learn more!
Faculty Positions
The Department of Chemistry in the Faculty of Arts & Science at the University of Toronto is inviting applications for two full-time tenure stream positions in Experimental Physical Chemistry. One…
www.chemistry.utoronto.ca
August 13, 2025 at 2:06 PM
The Department of Chemistry in the Faculty of Arts & Science at the University of Toronto is inviting applications for two full-time tenure stream positions in Experimental Physical Chemistry. Competition closes September 10, 2025 - visit us to learn more!
Reposted by Mark W.B. Wilson
Dalhousie locks out profs, other faculty members over contract dispute
Union represents nearly 1,000 professors, instructors, librarians and professional counsellors #Halifax #NovaScotia
www.cbc.ca/news/canada/...
Union represents nearly 1,000 professors, instructors, librarians and professional counsellors #Halifax #NovaScotia
www.cbc.ca/news/canada/...
Dalhousie locks out profs, other faculty members over contract dispute | CBC News
Dalhousie University professors, librarians and other teacher staff have hit the picket lines in Halifax following the school’s decision this week to lock out faculty association members after no coll...
www.cbc.ca
August 20, 2025 at 2:22 PM
Dalhousie locks out profs, other faculty members over contract dispute
Union represents nearly 1,000 professors, instructors, librarians and professional counsellors #Halifax #NovaScotia
www.cbc.ca/news/canada/...
Union represents nearly 1,000 professors, instructors, librarians and professional counsellors #Halifax #NovaScotia
www.cbc.ca/news/canada/...
Reposted by Mark W.B. Wilson
We have a postdoc opening w/ @samblau.bsky.social
on the autonomous synthesis of colloidal upconverting nanoparticles.
If you're looking for an exciting postdoc combining #robotics, #nanochemistry, #machinelearning, #UCNPs & simulations, see the link below!
combinano.lbl.gov/openings
on the autonomous synthesis of colloidal upconverting nanoparticles.
If you're looking for an exciting postdoc combining #robotics, #nanochemistry, #machinelearning, #UCNPs & simulations, see the link below!
combinano.lbl.gov/openings
Chan Group @ Molecular Foundry - openings
The Chan group welcomes inquiries for motivated, creative, and independent researchers at all levels (postdoctoral fellow, graduate students, undergraduates, and visitors), even in the absence of post...
combinano.lbl.gov
August 14, 2025 at 6:25 PM
Reposted by Mark W.B. Wilson
As part of the Early Career Board of Nano Letters, I’ll be occasionally sharing papers I enjoyed reading.
This week, two single-nanocrystal studies caught my eye. One on flat PbSe nanocrystals of discrete thicknesses, and another on magic-sized CdSe clusters. #NanoLettBoardPick
This week, two single-nanocrystal studies caught my eye. One on flat PbSe nanocrystals of discrete thicknesses, and another on magic-sized CdSe clusters. #NanoLettBoardPick
August 7, 2025 at 4:50 PM
As part of the Early Career Board of Nano Letters, I’ll be occasionally sharing papers I enjoyed reading.
This week, two single-nanocrystal studies caught my eye. One on flat PbSe nanocrystals of discrete thicknesses, and another on magic-sized CdSe clusters. #NanoLettBoardPick
This week, two single-nanocrystal studies caught my eye. One on flat PbSe nanocrystals of discrete thicknesses, and another on magic-sized CdSe clusters. #NanoLettBoardPick
Reposted by Mark W.B. Wilson
Sign of the times- Michigan State, one of the biggest astronomy programs in the USA, is not accepting ANY applications for its graduate program this year 😖
🔭🧪🎢
🔭🧪🎢
July 30, 2025 at 7:07 PM
Sign of the times- Michigan State, one of the biggest astronomy programs in the USA, is not accepting ANY applications for its graduate program this year 😖
🔭🧪🎢
🔭🧪🎢
Reposted by Mark W.B. Wilson
Heads-up: we'll be searching this Fall for a tenure-stream faculty member in Theoretical #QuantumOptics (#AMOPhysics #QuantumInformation)
at U of T Physics
@cqiqc-uoft.bsky.social
Official ad out next month – please alert potential strong candidates you may know!
www.youtube.com/watch?v=e3-5...
at U of T Physics
@cqiqc-uoft.bsky.social
Official ad out next month – please alert potential strong candidates you may know!
www.youtube.com/watch?v=e3-5...
U2 - I Still Haven't Found What I'm Looking For (Official Music Video)
YouTube video by U2VEVO
www.youtube.com
July 23, 2025 at 3:57 PM
Heads-up: we'll be searching this Fall for a tenure-stream faculty member in Theoretical #QuantumOptics (#AMOPhysics #QuantumInformation)
at U of T Physics
@cqiqc-uoft.bsky.social
Official ad out next month – please alert potential strong candidates you may know!
www.youtube.com/watch?v=e3-5...
at U of T Physics
@cqiqc-uoft.bsky.social
Official ad out next month – please alert potential strong candidates you may know!
www.youtube.com/watch?v=e3-5...
Reposted by Mark W.B. Wilson
Reposted by Mark W.B. Wilson
Join us at the EmergentNano symposium in Valencia this October!
June 10, 2025 at 12:51 PM
Join us at the EmergentNano symposium in Valencia this October!
Issue 22 is here!
Our front cover this week features Helen Tran et al 🤩
'Sequence-defined peptoids via iterative exponential growth'
🔗 doi.org/10.1039/D5SC...
#ChemSciCovers
Our front cover this week features Helen Tran et al 🤩
'Sequence-defined peptoids via iterative exponential growth'
🔗 doi.org/10.1039/D5SC...
#ChemSciCovers
June 6, 2025 at 1:08 PM
Reposted by Mark W.B. Wilson
New Hot article from @ckerzig.bsky.social, @gloriusfrank.bsky.social and colleagues:
'Pushing the limit of triplet–triplet annihilation photon upconversion towards the UVC range' 🔥
#OpenAccess 🔓
'Pushing the limit of triplet–triplet annihilation photon upconversion towards the UVC range' 🔥
#OpenAccess 🔓
Pushing the limit of triplet–triplet annihilation photon upconversion towards the UVC range
Triplet–triplet annihilation photon upconversion (TTA-UC) provides a milder alternative to traditional UVB/UVC photochemistry. However, suitable sensitizer-annihilator pairs are scarce, in particular…
buff.ly
June 4, 2025 at 12:02 PM
New Hot article from @ckerzig.bsky.social, @gloriusfrank.bsky.social and colleagues:
'Pushing the limit of triplet–triplet annihilation photon upconversion towards the UVC range' 🔥
#OpenAccess 🔓
'Pushing the limit of triplet–triplet annihilation photon upconversion towards the UVC range' 🔥
#OpenAccess 🔓
Reposted by Mark W.B. Wilson
🌈 Happy PRIDE Month! 🌈
We proudly celebrate and support our LGBTQ2IA+ students, alumni, faculty, and staff—not just in June, but every day. Chemistry is stronger when everyone belongs.
Let’s honor the incredible contributions of LGBTQ2IA+ chemists. #PrideMonth #InclusiveSTEM
We proudly celebrate and support our LGBTQ2IA+ students, alumni, faculty, and staff—not just in June, but every day. Chemistry is stronger when everyone belongs.
Let’s honor the incredible contributions of LGBTQ2IA+ chemists. #PrideMonth #InclusiveSTEM
June 3, 2025 at 1:41 PM
🌈 Happy PRIDE Month! 🌈
We proudly celebrate and support our LGBTQ2IA+ students, alumni, faculty, and staff—not just in June, but every day. Chemistry is stronger when everyone belongs.
Let’s honor the incredible contributions of LGBTQ2IA+ chemists. #PrideMonth #InclusiveSTEM
We proudly celebrate and support our LGBTQ2IA+ students, alumni, faculty, and staff—not just in June, but every day. Chemistry is stronger when everyone belongs.
Let’s honor the incredible contributions of LGBTQ2IA+ chemists. #PrideMonth #InclusiveSTEM
Reposted by Mark W.B. Wilson
Universities are not passive beneficiaries of government largesse. It is the federal government that depends on universities to conduct the research that keeps our nation healthy, safe and economically competitive.I discuss in the Washington Post.
www.washingtonpost.com/opinions/202...
www.washingtonpost.com/opinions/202...
Opinion | Universities and the government: Which needs the other more?
From public health to high-tech innovation, universities are the workhorses of national progress.
www.washingtonpost.com
June 3, 2025 at 12:01 PM
Universities are not passive beneficiaries of government largesse. It is the federal government that depends on universities to conduct the research that keeps our nation healthy, safe and economically competitive.I discuss in the Washington Post.
www.washingtonpost.com/opinions/202...
www.washingtonpost.com/opinions/202...
Reposted by Mark W.B. Wilson
We are looking for a postdoc to join our research group at York University in Toronto, Canada to study the atmospheric chemistry of PFAS #PFAS
www.cjygroup.com/opportunities
www.cjygroup.com/opportunities
Opportunities — CJY Group
www.cjygroup.com
May 27, 2025 at 1:41 PM
We are looking for a postdoc to join our research group at York University in Toronto, Canada to study the atmospheric chemistry of PFAS #PFAS
www.cjygroup.com/opportunities
www.cjygroup.com/opportunities